Classless IPv4 Addressing Quiz
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Questions and Answers

What is the main reason for classless addressing?

  • More classes than other types of addressing
  • More security by encrypting datagrams
  • More compatibility with upper layers protocols
  • Better usage of the available addressing space (correct)

Which of the following can be used as a block address for a 1024 host network?

  • TCP and UDP
  • Upper protocol and lower protocol
  • OUI and serial number
  • Network ID and host ID (correct)

What is the only one of the following IP addresses that can be assigned as a host address?

  • 100.10.50.192 /28
  • 100.256.70.10 /24
  • 200.60.6.7 /29 (correct)
  • 210.60.50.40 /25

How many hosts can be accommodated in the block 20.30.50.0 /22?

<p>1048 (D)</p> Signup and view all the answers

Which of the following is not a valid CIDR notation?

<p>/256 (B)</p> Signup and view all the answers

What is the block boundary address for subnet 192.168.1.0/26?

<p>192.168.1.128 (C)</p> Signup and view all the answers

What is the subnet mask for a CIDR notation of n=22?

<p>255.255.252.0 (C)</p> Signup and view all the answers

What is the suffix length for a CIDR notation of n=22?

<p>10 (D)</p> Signup and view all the answers

What is the actual number of addresses in a block with a CIDR notation of n=22?

<p>$2^{10}$ (A)</p> Signup and view all the answers

What is the first address in the block for a CIDR notation of n=22?

<p>Any address in the block ANDed with the subnet mask (A)</p> Signup and view all the answers

What is the last address in the block for a CIDR notation of n=22?

<p>The first address in the block plus the complement of the subnet mask (A)</p> Signup and view all the answers

What is the usable number of addresses in a block with a CIDR notation of n=22?

<p>$2^{10}-2$ (B)</p> Signup and view all the answers

What is the subnet mask for the CIDR notation 17.17.32.0/22?

<p>255.255.252.0 (B)</p> Signup and view all the answers

What is the suffix length for the CIDR notation 17.17.32.0/22?

<p>12 (A)</p> Signup and view all the answers

What is the first address in the block for the CIDR notation 17.17.32.0/22?

<p>17.17.32.0 (D)</p> Signup and view all the answers

What is the total number of addresses in the block for the CIDR notation 17.17.32.0/22?

<p>1024 (B)</p> Signup and view all the answers

Which statement about CIDR notation is correct?

<p>The prefix length is the number of bits in the network portion of the IP address. (B)</p> Signup and view all the answers

What is the last address in the block for the CIDR notation 17.17.32.0/22?

<p>17.17.35.255 (C)</p> Signup and view all the answers

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